sent/20240527-topic-sm8x50-upstream-retimer-broadcast-mode-76520768ac3f-v1
Neil Armstrong
@neil.armstrong
ce6df8ec
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usb: typec-mux: broadcast typec state to next mux for ptn36502 & nb7vpq904m retimers
In the Type-C graph, a retimer is usually in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.
Update the nb7vpq904m & ptn36502 retimers to get an optional type-c mux
on the next endpoint, and broadcast the received mode to it.
This makes it possible to support 4-lanes DP altmode on Qualcomm platforms.
To: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Luca Weiss <luca.weiss@fairphone.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
Neil Armstrong (2):
usb: typec-mux: ptn36502: broadcast typec state to next mux
usb: typec-mux: nb7vpq904m: broadcast typec state to next mux
drivers/usb/typec/mux/nb7vpq904m.c | 29 +++++++++++++++++++++++++++--
drivers/usb/typec/mux/ptn36502.c | 33 ++++++++++++++++++++++++++++++---
2 files changed, 57 insertions(+), 5 deletions(-)
---
base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
change-id: 20240527-topic-sm8x50-upstream-retimer-broadcast-mode-76520768ac3f
Best regards,